What this work contributes
Reports a small force signal from an asymmetric radio-frequency cavity and documents a vacuum test campaign. It is a useful historical case for examining how a claimed propulsion signal must be tested against systematic effects.
Where the evidence stops
The reported result is not accepted proof of reactionless propulsion. Read with Tajmar, Neunzig and Weikert's more sensitive null measurements and analysis of thermal and magnetic artifacts (P13).
Original source
Harold White, Paul March, James Lawrence, Jerry Vera, Andre Sylvester, David Brady, Paul Bailey. Measurement of Impulsive Thrust from a Closed Radio-Frequency Cavity in Vacuum. Journal of Propulsion and Power 33(4), 830–841 (2017).
First published online: 2016. Journal issue year: 2017.
DOI: 10.2514/1.B36120
How we use it
This record belongs to Measurement & replication. Its evidence label describes the cited work, not the maturity of a Metric Flight device. Follow the original methods, corrections and conditions before transferring a result to a different geometry or scale.
Editorial note reviewed 19 October 2026. AI assisted research discovery and synthesis. Citation metadata and claims were checked against primary publication or institutional records; full-text access varies. Read the source for the complete method.